Universal back chisel



FIG. 1 is a perspective view of a universal back chisel in accordance with the new design;

FIG. 2 is a left side view of the universal back chisel of FIG. 1;

FIG. 3 is a right side view of the universal back chisel of FIG. 1;

FIG. 4 is a front view of the universal back chisel of FIG. 1;

FIG. 5 is a rear view of the universal back chisel of FIG. 1;

FIG. 6 is a top view of the universal back chisel of FIG. 1; and,

FIG. 7 is a bottom view of the universal back chisel of FIG. 1.

The broken lines in the figures are directed to portions of the universal back chisel that form no part of the claimed design. 

CLAIM The ornamental design for a universal back chisel, as shown and described. 